Ball Handler in basketball describes the player who is in possession of the ball.
At the start of the game, this player is usually the point guard. The ball handler's job is to move the ball up the court and make smart decisions about passing to teammates or taking shots.
A good ball handler has excellent dribbling skills and can keep the ball away from defenders. They need to be quick, have good vision to see the whole court, and make smart choices under pressure.
Sometimes, other players like shooting guard or small forward can also be ball handlers, depending on the situation. But most of the time, the point guard is the primary ball handler.